CN101463984A - Illuminating apparatus - Google Patents

Illuminating apparatus Download PDF

Info

Publication number
CN101463984A
CN101463984A CNA2007102031466A CN200710203146A CN101463984A CN 101463984 A CN101463984 A CN 101463984A CN A2007102031466 A CNA2007102031466 A CN A2007102031466A CN 200710203146 A CN200710203146 A CN 200710203146A CN 101463984 A CN101463984 A CN 101463984A
Authority
CN
China
Prior art keywords
light source
temperature
sensing
electric heating
circuit board
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2007102031466A
Other languages
Chinese (zh)
Inventor
赖志铭
江文章
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foxsemicon Integrated Technology Shanghai Inc
Foxsemicon Integrated Technology Inc
Original Assignee
Foxsemicon Integrated Technology Shanghai Inc
Foxsemicon Integrated Technology Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Foxsemicon Integrated Technology Shanghai Inc, Foxsemicon Integrated Technology Inc filed Critical Foxsemicon Integrated Technology Shanghai Inc
Priority to CNA2007102031466A priority Critical patent/CN101463984A/en
Priority to US12/178,821 priority patent/US8011814B2/en
Priority to EP08253704A priority patent/EP2072894A2/en
Publication of CN101463984A publication Critical patent/CN101463984A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/54—Cooling arrangements using thermoelectric means, e.g. Peltier elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Abstract

The invention relates to an illuminating apparatus, comprising at least one light source, an electrothermal freezer, a heat abstractor and a sensing control unit; wherein, the electrothermal freezer comprises a cold junction and a hot junction, the cold junction of the electrothermal freezer is thermally connected with the at least one light source, the heat abstractor is thermally connected with the hot junction of the electrothermal freezer, the sensing control unit comprises a sensing unit and a control unit; the sensing unit of the sensing control unit is thermally connected with the at least one source light and is used for sensing and calculating the temperature of the at least one light source and outputting corresponding sensing signals to the control unit, while the control unit receives the sensing signals and controls and adjusts the working current or voltage of the electrothermal freezer according to the sensing signals. In addition, the invention also relates to a temperature control method using the illuminating apparatus.

Description

Lighting device
Technical field
The present invention relates to a kind of lighting device, relate in particular to a kind of lighting device that obtains better cooling efficiency.
Background technology
At present, light emitting diode (Light Emitting Diode, LED) characteristic such as good and luminous efficiency height replaces cold-cathode fluorescence lamp (Cold Cathode Fluorescent Lamp gradually because of the tool light quality, CCFL), become the light-emitting component in the lighting device, specifically can consult people such as Michael S.Shur at document Proceedings of the IEEE, " Solid-State Lighting:Toward Superior Illumination " literary composition that Vol.93, No.10 delivered in (in October, 1005).
Light emitting diode stability in use is subjected to the influence of environment temperature easily, and for example, when temperature was too high, the luminous intensity of light emitting diode decayed easily, thereby caused shorten its service life.
In view of this, provide a kind of lighting device of better cooling efficiency that obtains in fact for necessary.
Summary of the invention
Below a kind of lighting device of tool better cooling efficiency will be described with embodiment.
A kind of lighting device, it comprises at least one light source; An electric heating refrigerator, it comprises a cold junction and a hot junction, the cold junction of this electric heating refrigerator forms hot the connection with this at least one light source; A heat abstractor, its hot junction with this electric heating refrigerator forms hot the connection; A sensing control module, it comprises a sensing cell and a control module, at least one light source is hot is connected with this for this sensing cell, be used for sensing and calculate the temperature of at least one light source and export a corresponding sensing signal to this control module, this control module receives this sensing signal and adjusts the operating current or the voltage of this electric heating refrigerator according to this sensing signal control.
A kind of temperature-controlled process that adopts above-mentioned lighting device, it may further comprise the steps: the temperature of at least one light source of this sensing cell sensing is also exported a corresponding sensing signal to this control module; This control module receives this sensing signal and adjusts the operating current or the voltage of electric heating refrigerator according to this sensing signal control.
With respect to prior art, this lighting device and adopt the temperature-controlled process of this lighting device, it dispels the heat at least one light source by electric heating refrigerator and heat abstractor are set, and utilize sensing control module sensing to calculate the temperature of this at least one light source, to adjust the operating current or the voltage of electric heating refrigerator by it, make the temperature of this at least one light source keep stable, thereby improved the operating efficiency of lighting device, also prolonged the service life of himself.
Description of drawings
Fig. 1 is the structural representation of the lighting device that provides of first embodiment of the invention.
Fig. 2 is the schematic flow sheet of the temperature-controlled process that provides of second embodiment of the invention.
The specific embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is described in further detail.
See also Fig. 1, the lighting device 10 of a kind of tool better cooling efficiency that first embodiment of the invention provides, it comprises at least one light source 11,13, heat abstractors 15 of electric heating refrigerator (Thermoelectric Cooler, TE Cooler), and a sensing control module 17.
This at least one light source 11 can be at least one solid state light emitter, as light emitting diode etc.The number of this at least one light source 11 can be a plurality of, and as a plurality of light emitting diodes, and these a plurality of light emitting diodes can be white light-emitting diode or colorful light-emitting diode, as red, green, blue light emitting diode etc.In addition, this at least one light source 11 can be installed on the circuit board 12, thereby can form hot the connection with this electric heating refrigerator 13 by this circuit board 12.This circuit board 12 can be preferably ceramic circuit board, and certainly, it also can be glass fibre circuit board or other and utilizes circuit board that highly heat-conductive material makes etc.
This electric heating refrigerator 13 is used to dispel the heat to this heat abstractor 15 with the heat that sends from least one light source 11 by this.Particularly, this electric heating refrigerator 13 comprises the hot junction 132 that a cold junction 131, and this cold junction 131 are relative, and is connected N-type semiconductor 133, P-type semiconductor 134 between this cold junction 131 and this hot junction 132.For the heat of the regional area that makes the cold junction 131 that concentrates on this electric heating refrigerator 13, hot junction 132 can evenly spread, be coated with one first ceramic substrate 1310 and one second ceramic substrate 1320 on this cold junction 131, this hot junction 132 respectively, and this first ceramic substrate 1310 is between this cold junction 131 and at least one light source 11, and be attached on the circuit board 12, this second ceramic substrate 1320 is between this hot junction 132 and this heat abstractor 15.This first ceramic substrate 1310 and the preferable heat conductivity of these second ceramic substrate, 1320 tools, thus can make this at least one light source 11 obtain preferable thermal conduction effect.In addition, this first ceramic substrate 1310 and second ceramic substrate 1320 also have preferable insulating properties, and it can make electric heating refrigerator 13 keep excellent electric insulating with at least one light source 11 and heat abstractor 15 respectively.
This heat abstractor 15 comprises a pedestal 151 and is arranged at a plurality of radiating fins 152 on this pedestal 151 that this pedestal 151 is arranged on this second ceramic substrate 1320, thereby forms hot connections with the hot junction 132 of this electric heating refrigerator 13.
This sensing control module 17 comprises a sensing cell 171 and a control module 172.This control module 172 forms with this sensing cell 171 and this electric heating refrigerator 13 respectively and electrically connects.Wherein, this sensing cell 171 is attached on this circuit board 12, and it can specifically be set to a temperature-sensitive sticker or the thermocouple temperature with this at least one light source 11 of sensing.
During work, utilize 13 power supplies of 19 pairs of these electric heating refrigerators of an external power source, wherein, N-type semiconductor 133 connects the positive pole of external power source 19, and P-type semiconductor 134 connects the negative pole of external power source 19.During energising, the electronics that has negative electricity in the N-type semiconductor 133 moves towards the positive pole of outside power supply 19, the hole that has positive electricity in the P-type semiconductor 134 will be moved towards the negative pole of outside power supply 19, thus, the heat of cold junction 131 will be passed to hot junction 132 along with moving of electronics and hole, thereby heat that this at least one light source 11 produces is forced via the cold junction 131 of electric heating refrigerator 13 be transferred to hot junction 132, further reach the radiating fin 152 of this heat abstractor 15 again, and be distributed to the external world by this radiating fin 152.Certainly, be understandable that this heat abstractor 15 also can be a radiator fan, it can be connected in another external power source and provide its work the sharp electric energy that needs by this another external power source.
See also Fig. 1 and Fig. 2, the present invention second executes a kind of temperature-controlled process that example provides, the lighting device 10 that it adopts first embodiment of the invention to provide, and this temperature-controlled process may further comprise the steps:
(1) temperature of at least one light source 11 of these sensing cell 171 sensings and export a corresponding sensing signal to this control module 172.
Be understandable that, because at least one light source 11 is arranged on the circuit board 12, make the temperature of at least one light source 11 be difficult to directly carry out sensing, therefore, during operation, can utilize the temperature of sensing cell 171 sensing circuit plates 12 earlier, draw temperature gap between at least one light source 11 and the circuit board 12 in conjunction with experimental technique again, and then can utilize computational methods to calculate the temperature of at least one light source 11.
(2) this control module 172 receives this sensing signal and controls operating current or the voltage of adjusting electric heating refrigerator 13 according to this sensing signal, so that the temperature of this at least one light source 1111 keeps stable.
As shown in Figure 2, when at least one light source 11 is opened and is worked, can send sensing signal by this control module 172 is first mode of operation with the mode of operation of controlling electric heating refrigerator 13, be understandable that, this moment, the temperature of at least one light source 11 was lower, its heat radiation is also less, make that the heat that accumulates at least one light source 11 and the circuit board 12 is less, the temperature value that sensing cell 171 sensings calculate is lower, therefore, corresponding to first mode of operation, the operating current or the magnitude of voltage of these control module 172 control electric heating refrigerators 13 are first operating current or magnitude of voltage.The 13 pairs of at least one light sources 11 of electric heating refrigerator that are operated under first operating current or the magnitude of voltage have certain thermolysis.
Along with at least one 11 opening times of light source are elongated, or the rising of extraneous temperature, the heat that accumulates at least one light source 11 and the circuit board 12 will become big gradually.
The temperature value of at least one light source 11 that calculates when sensing cell 171 sensings is during more than or equal to a reference temperature value T, the mode of operation of these control module 172 control electric heating refrigerators 13 is second mode of operation, so that the operating current of this electric heating refrigerator 13 or magnitude of voltage are second operating current or magnitude of voltage, and this second operating current or magnitude of voltage are greater than first operating current or magnitude of voltage.Be understandable that, with respect to the electric heating refrigerator 13 that is operated under first operating current or the magnitude of voltage, the thermolysis that is operated in the 13 pairs of at least one light sources 11 of electric heating refrigerator under second operating current or the magnitude of voltage will be more obvious, it can make the heat that accumulates at least one light source 11 and the circuit board 12 reduce, and makes the temperature value step-down that sensing cell 171 sensings calculate.The temperature value that calculates when sensing cell 171 sensings is less than reference temperature value T, and operating current or magnitude of voltage that control module 172 is controlled electric heating refrigerator 13 once more are first operating current or magnitude of voltage.
Therefore, this lighting device 10 has good performance of heat dissipation, can stablize the characteristics of luminescence of at least one light source 11 of control.
The concrete numerical value of this reference temperature value T can be selected according to actual conditions, works as long as at least one light source 11 is remained under the normal operating temperature.Certainly, this reference temperature value T should not be provided with De Taigao, and preferably, when the temperature of the circuit board 12 that senses when sensing cell 171 was less than or equal to 120 degrees centigrade, the reference temperature value T that is obtained by the temperature computation of this circuit board 12 was applicable to actual requirement.
The lighting device 10 that the embodiment of the invention provides and adopt the temperature-controlled process of this lighting device 10, it dispels the heat by 15 pairs of at least one light sources 11 of electric heating refrigerator 13 and heat abstractor are set, and utilize sensing control module 17 sensings to calculate the temperature of this at least one light source 11, to adjust the operating current or the voltage of electric heating refrigerator 13 by it, make the temperature of this at least one light source 11 keep stable, thereby improved the operating efficiency of lighting device 10, also prolonged the service life of himself.
Be understandable that, for the person of ordinary skill of the art, can technical conceive according to the present invention make the change and the distortion of other various correspondences, and all these change the protection domain that all should belong to claim of the present invention with distortion.

Claims (10)

  1. [claim 1] a kind of lighting device, it comprises:
    At least one light source;
    An electric heating refrigerator, it comprises a cold junction and a hot junction, the cold junction of this electric heating refrigerator forms hot the connection with this at least one light source;
    A heat abstractor, its hot junction with this electric heating refrigerator forms hot the connection;
    A sensing control module, it comprises a sensing cell and a control module, at least one light source is hot is connected with this for this sensing cell, be used for sensing and calculate the temperature of at least one light source and export a corresponding sensing signal to this control module, this control module receives this sensing signal and adjusts the operating current or the voltage of this electric heating refrigerator according to this sensing signal control.
  2. [claim 2] lighting device as claimed in claim 1 is characterized in that, this lighting device also comprises a circuit board, and this at least one light source is arranged on this circuit board, and forms hot the connection by this circuit board with the cold junction of this electric heating refrigerator.
  3. [claim 3] lighting device as claimed in claim 2 is characterized in that, this sensing cell is a temperature-sensitive sticker or a thermocouple, and it is arranged on this circuit board.
  4. [claim 4] lighting device as claimed in claim 1 is characterized in that, this heat abstractor comprises a pedestal and be arranged on a plurality of radiating fins on this pedestal that this heat abstractor forms hot the connection by its pedestal with the hot junction of this electric heating refrigerator.
  5. [claim 5] lighting device as claimed in claim 1 is characterized in that, this heat abstractor is a radiator fan.
  6. [claim 6] lighting device as claimed in claim 1 is characterized in that: this at least one light source is at least one LED source.
  7. [claim 7] a kind of temperature-controlled process that adopts lighting device as claimed in claim 1, it may further comprise the steps:
    The temperature of at least one light source of this sensing cell sensing is also exported a corresponding sensing signal to this control module;
    This control module receives this sensing signal and adjusts the operating current or the voltage of electric heating refrigerator according to this sensing signal control.
  8. [claim 8] temperature-controlled process as claimed in claim 7, it is characterized in that, the temperature of at least one light source that senses when sensing cell is during less than a reference temperature value, and the operating current of this electric heating refrigerator or magnitude of voltage are first operating current or magnitude of voltage; The temperature of at least one light source that senses when sensing cell is during more than or equal to this reference temperature value, the operating current of this electric heating refrigerator or magnitude of voltage are second operating current or magnitude of voltage, and this second operating current or magnitude of voltage are greater than first operating current or magnitude of voltage.
  9. [claim 9] temperature-controlled process as claimed in claim 8 is characterized in that, before the temperature of at least one light source of this sensing cell sensing, also comprises:
    A circuit board is provided and at least one light source is arranged on this circuit board;
    Sensing cell is arranged on the circuit board, obtains the temperature of at least one light source with the temperature computation of the circuit board that senses by sensing cell.
  10. [claim 10] temperature-controlled process as claimed in claim 9 is characterized in that, the temperature of the circuit board that this sensing cell senses is less than or equal to 120 degrees centigrade.
CNA2007102031466A 2007-12-17 2007-12-17 Illuminating apparatus Pending CN101463984A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CNA2007102031466A CN101463984A (en) 2007-12-17 2007-12-17 Illuminating apparatus
US12/178,821 US8011814B2 (en) 2007-12-17 2008-07-24 Illuminating device
EP08253704A EP2072894A2 (en) 2007-12-17 2008-11-12 Illumination device with thermoelectric cooler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2007102031466A CN101463984A (en) 2007-12-17 2007-12-17 Illuminating apparatus

Publications (1)

Publication Number Publication Date
CN101463984A true CN101463984A (en) 2009-06-24

Family

ID=40513963

Family Applications (1)

Application Number Title Priority Date Filing Date
CNA2007102031466A Pending CN101463984A (en) 2007-12-17 2007-12-17 Illuminating apparatus

Country Status (3)

Country Link
US (1) US8011814B2 (en)
EP (1) EP2072894A2 (en)
CN (1) CN101463984A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104763890A (en) * 2015-03-20 2015-07-08 江苏达伦电子股份有限公司 LED lamp structure convenient for cooling
CN106873669A (en) * 2017-02-21 2017-06-20 江汉大学 A kind of lighting device for greenhouse
CN108336065A (en) * 2018-01-31 2018-07-27 韩德军 A kind of automatic temperature-adjusting control LED component
CN109976411A (en) * 2017-12-28 2019-07-05 泰雷兹公司 Heat control device, associated electronics systems and the platform of component

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8649179B2 (en) 2011-02-05 2014-02-11 Laird Technologies, Inc. Circuit assemblies including thermoelectric modules
US10392959B2 (en) * 2012-06-05 2019-08-27 General Electric Company High temperature flame sensor
TWI461635B (en) * 2012-06-08 2014-11-21 Univ Nat Formosa Led light with heat dissipating structure capable of avoiding frosting over and temperature controlling method thereof
CN103794580B (en) * 2012-10-26 2018-09-11 上海联星电子有限公司 A kind of insulation interconnection heat sink and power module
CN103022335B (en) * 2012-12-07 2015-06-03 南京中江新材料科技有限公司 Integrated electronic cooling module of diaphragm panel ceramic (DPC) substrate of light-emitting diode (LED) flip chip and manufacturing method of integrated electronic cooling module

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7252385B2 (en) 2004-05-11 2007-08-07 Infocus Corporation Projection LED cooling

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104763890A (en) * 2015-03-20 2015-07-08 江苏达伦电子股份有限公司 LED lamp structure convenient for cooling
CN106873669A (en) * 2017-02-21 2017-06-20 江汉大学 A kind of lighting device for greenhouse
CN106873669B (en) * 2017-02-21 2019-07-16 江汉大学 A kind of lighting device for greenhouse
CN109976411A (en) * 2017-12-28 2019-07-05 泰雷兹公司 Heat control device, associated electronics systems and the platform of component
CN109976411B (en) * 2017-12-28 2021-11-12 泰雷兹公司 Thermal control device for a component, related electronic system and platform
US11300332B2 (en) 2017-12-28 2022-04-12 Thales Thermal control device of a component, associated electronic system and platform
CN108336065A (en) * 2018-01-31 2018-07-27 韩德军 A kind of automatic temperature-adjusting control LED component

Also Published As

Publication number Publication date
EP2072894A2 (en) 2009-06-24
US8011814B2 (en) 2011-09-06
US20090154175A1 (en) 2009-06-18

Similar Documents

Publication Publication Date Title
CN101463984A (en) Illuminating apparatus
CN101469856A (en) LED lamp
CN101463986A (en) LED lamp
CN101532657A (en) Illuminating apparatus
CN102494317A (en) Water cooling device and water cooling method for large-scale light-emitting diode (LED) lamp system
CN108679465A (en) A kind of LED lamp
CN103016992B (en) Self power generation active heat removal LED
CN201110527Y (en) High power LED light source device
CN201204203Y (en) Radiating device for high-power LED
CN202868371U (en) Intelligent semiconductor heat dissipation light-emitting diode (LED) lamp
CN100584176C (en) Heat radiation device and lighting device
CN102878455B (en) Intelligent semiconductor heat radiating LED (light-emitting diode) lamp
CN201054362Y (en) Focusing LED electronic cooling device
CN101839412A (en) High-power LED illuminator cooled by finned tubular radiator
CN203010276U (en) LED (light emitting diode) cooling system and LED lighting system using same
CN204810595U (en) Variable colour temperature intelligence LED photoflash lamp
CN202091990U (en) Led street lamp
TWI461635B (en) Led light with heat dissipating structure capable of avoiding frosting over and temperature controlling method thereof
CN201830603U (en) Cooling system used for vehicle-mounted and ship-based large-sized intelligent display
CN108006604A (en) Heat radiating device for high-power LED street lamp based on heat recovery
CN103185247A (en) Lamp
KR20090078927A (en) Temp controller power light emitting diode module
CN204879689U (en) Light source device
Liu et al. Thermal performance analysis of photoelectric parameters on high-power LEDs packaging modules
CN208041930U (en) A kind of LED energy-saving structures and a kind of LED energy-saving lamps

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Open date: 20090624